<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单 -->
            <el-form ref="loginFormRef" label-width="0" class="login_form" :model="loginForm" :rules="loginFormRules">
                <!-- 用户名 -->
                <el-form-item label="" prop="username">
                    <el-input prefix-icon="el-icon-user-solid" v-model="loginForm.username"></el-input>
                </el-form-item>
            <!-- 密码 -->
                <el-form-item label="" prop="password">
                    <el-input prefix-icon="el-icon-unlock" v-model="loginForm.password" type="password"></el-input>
                </el-form-item>
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>
<script>
export default {
    data(){
        return{
            //数据绑定对象
            loginForm:{
                username:'admin',
                password:'123456'
            },
            // 验证
             loginFormRules:{
                username: [
            { required: true, message: '请输入用户名称', trigger: 'blur' },
            { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
                ],
                password: [
            { required: true, message: '请输入密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ],
             }   
            }
        },
    methods:{
        //点击重置 重置登录表单
        resetLoginForm(){
            // console.log(this)
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            this.$refs.loginFormRef.validate(async valid=>{
                if(!valid) return false;
                const {data:res}=await this.$http.post('login',this.loginForm);
                console.log(res);
                if (res.meta.status !== 200) return this.$message.error('登录失败！');
                this.$message.success('登录成功！');
                //1  将登录成功之后的token 保存到客户端sessionStorage中
                //token 只应在当前网站打开期间生效，所以token 保存在sessionStorage中
                window.sessionStorage.setItem("token",res.data.token);
                this.$router.push('/home');
            });
        }
    }
    };
</script>
// scoped当前组件生效 L一定要大写！
<style Lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}
.avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);background-color: #fff;
}
img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
     }
.btns{
    display: flex;
    justify-content: flex-end;
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
    /* 设置padding过多 */
}
 </style>